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SashulF [63]
3 years ago
11

A bag has 9 blue marbles, 7 red marbles, 4 green marbles

Mathematics
2 answers:
scoundrel [369]3 years ago
7 0

Answer:

7/25

Step-by-step explanation:

First we need to determine how many total marbles

9blue+7red+4green+5purple = 25 marbles

P(red) = red/total

          = 7/25

Vikentia [17]3 years ago
6 0

Answer:

\frac{7}{25}  \\

Step-by-step explanation:

total number of marbles

= 9+7+4+5 = 25

the probability of randomly

drawing a red marble from the bag

=  \frac{7}{25}  \\

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Phil has 3 times as many rocks as Peter. Together, they have 48 rocks. How many more rocks does Phil have than Peter?
andrezito [222]
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8 0
3 years ago
Maya had $27. She spent all the money on buying 3 burgers for $x each and 2 sandwiches for $y each. If Maya would have bought 2
defon

Answer:

Option C

The student's conclusion is correct because the solution to the system of equations 3x+2y=27  and 2x+y=16 is (5,6)

Step-by-step explanation:

Let

x------> the cost of each burger

y-----> the cost of each sandwich

we know that

3x+2y=27 -----> equation A

2x+y=(27-11)

2x+y=16 ----> equation B

Solve the system of equations

Multiply the equation B by -2

-2(2x+y)=-2*16 ----->-4x-2y=-32 ------> equation C

Adds equation A and equation C

3x+2y=27 \\-4x-2y=-32\\ ----------\\ 3x-4x=27-32\\ -x=-5\\x=5

Substitute the value of x in the equation B

2(5)+y=16

10+y=16

y=6

The solution of the system of equations is the point (5,6)

so

The price of each burger is \$5

The price of each sandwich is \$6

6 0
3 years ago
Read 2 more answers
Can you please help me I plead you
Levart [38]

Answer:

Question 2

x is approximately 15.038 or 15 days

Question 3

$3.41

Question 4

31.1

Step-by-step explanation:

Question 2

5.2 km/1 day =78.2 km/x days

Multiply both sides by x

5.2x=78.2

divide by 5.2

x is approximately 15.038

or 15 days

Question 3

350-(262.94+83.65)

$3.41

Question 4

22(1.3)+2.5

31.1 m

5 0
3 years ago
in 15 seconds, connor counts 7 vehicles passing by his house. At this rate how many vehicles would pass by in 5 hours
lesya [120]
Multiply by 4 to get to one minute —>28.
Multiply by 60 to get to one hour—> 1,680
Multiply by 5 to get to 5 hours—> 8,400
8 0
3 years ago
Find the average rate of change between f(-4) and f(-1) in the function f(x)=x^2+2x-8
wel
I got (x+4) (x-2)
I feel like its wrong. Sorry i tried
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3 years ago
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